CN104975213B - Environment-friendly high-toughness hard aluminum alloy profile production process - Google Patents
Environment-friendly high-toughness hard aluminum alloy profile production process Download PDFInfo
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- CN104975213B CN104975213B CN201510321001.0A CN201510321001A CN104975213B CN 104975213 B CN104975213 B CN 104975213B CN 201510321001 A CN201510321001 A CN 201510321001A CN 104975213 B CN104975213 B CN 104975213B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 99
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000001125 extrusion Methods 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 230000032683 aging Effects 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 229910000737 Duralumin Inorganic materials 0.000 claims description 31
- 238000005266 casting Methods 0.000 claims description 18
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- 239000000047 product Substances 0.000 claims description 15
- 239000011265 semifinished product Substances 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 abstract 2
- 238000009749 continuous casting Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 235000010210 aluminium Nutrition 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000001550 time effect Effects 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Extrusion Of Metal (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses an environment-friendly high-toughness hard aluminum alloy profile production process. The production process comprises burdening and smelting; the burdening is performed for the following component in percentage by mass: 5-5.5% of Cu, 2-4.5% of Fe, 0.1-0.3% of Mn, 0.5-3% of Mg, 1.1-1.5% of Zn, 0.1-1% of Si, 0.1% of Ni, 0.2% of Ti, and the balance of Al; the smelting is performed for 6-8 h under high temperature to obtain aluminum alloy molten liquid; and then, the horizontal continuous casting, the continuous extrusion and the three-stage ageing heat treatment are performed. The process shortens the alloy production process and period without needing the homogenization and the preheating treatment, and totally accords with the production requirements of energy conservation and greenness of a short-flow process; and a prepared aluminum alloy profile has excellent toughness and tensile strength, and can satisfy the gradually increasing high-end demands.
Description
Technical field
The invention belongs to technical field of metal material manufacture, and in particular to a kind of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar production
Technique.
Background technology
China has been global maximum aluminium extrusion material production, outlet and has consumed big country.Currently, China's aluminum extrusion industry enters
Enter the new stage of scale and technology upgrading, the important period in changing with transition.Aluminium alloy industry is towards life now
Environmentally-frielow-energy-consumptipolycarboxylic low-energy-consumptipolycarboxylic is produced, the excellent direction of alloy property is developed.
Continuously extruded is a kind of important process of aluminium alloy extrusions production, and continuously extruded bar material need not carry out the pre-heat treatment,
But for blank requires good toughness, moulding and forming property.Mainly had using the aluminium alloy of continuously extruded shaping：
1050th, 1060,1100,3003,6063, AA1050, AA6082, AA6063, AA3103, AA1200, AA3005 and AA3004 etc. 1
System, 3 are and 6 line aluminium alloys.With the development of science and technology, continual extruding technology is constantly improved, by extrusion process and work
The design and optimization of mould, the fertile product cross section of institute are increasingly complicated, and various section bars emerge in an endless stream, however, the continuously extruded beginning
The object being directed to eventually is soft aluminium alloy.For duralumin, hard alumin ium alloys such as 2xxx systems, 4xxx systems, 5xxx systems and 7xxx systems, due to modeling
Property resistance of deformation is larger, and processability is poor, is generally believed that and cannot be shaped using continual extruding technology.
Prior art is disclosed one kind and is thermally treated resulting in duralumin, hard alumin ium alloy section bar finished product by continuously extruded and two-stage time effect.
Up to 450～500MPa, up to 4～7.7%, average grain size is up to 0.020 for percentage elongation for products obtained therefrom room temperature tensile intensity
～0.040mm.However, although the technology considerably reduces energy consumption, but in practical application, percentage elongation, that is, toughness is also
It is not good enough, it is impossible to meet high demand.Such as a kind of state's a certain aviation special section bar of product needed, it is desirable to this kind of aluminium alloy type
Material tensile strength reaches 540N/mm-2, Proof strength of non-proportional reach 480N/mm-2, elongation after fracture reaches 8%, peels off
Corrosive nature reaches EB levels.
The present invention is intended to provide a kind of new environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar production technology, from raw material to technological parameter
Optimize comprehensively, can be produced with low energy consumption and take into account high intensity, percentage elongation reaches more than 12% outstanding high tenacity duralumin, hard alumin ium alloy type
Material, such technique have not been reported.
The content of the invention
Based on the technical problem that background technology is present, shortcoming of the present invention for prior art, by years of researches and
Experiment, and optimize by proportioning raw materials, and the condition of technique, there is provided a kind of new environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar life
Production. art, optimizes from raw material to technological parameter comprehensively, can produce intensity height with low energy consumption, and elongation after fracture reaches more than 12%
Outstanding high tenacity duralumin, hard alumin ium alloy section bar.
Technical scheme is as follows：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 5-5.5%, Fe 2-4.5%, Mn 0.1-0.3%, Mg 0.5-3%, Zn
1.1-1.5%, Si 0.1-1%, Ni 0.1%, Ti 0.2%, remaining for Al, melting 6h～8h, obtains aluminum conjunction at high temperature
Golden liquation；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting, and is cleaned；
(3) it is continuously extruded：
Continuously extruding and molding obtains semi-finished product aluminium alloy extrusions；
(4) three-step aging heat treatment：
Three-step aging heat treatment is carried out to the semi-finished product aluminium alloy extrusions that step (3) is obtained,
Obtain high tenacity duralumin, hard alumin ium alloy section bar finished product.
Preferred steps (3) are：Extruding rotating speed 3-5r/min, die entrance fillet r=0.4-0.7mm, obtain duralumin, hard alumin ium alloy type
Material；
Preferred steps (4) are：
One-level：Temperature is 200-300 DEG C, time 2-5h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 600-630 DEG C, time 50-60min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature is 120-150 DEG C, time 60-80min, and aluminium alloy extrusions is air cooled to room temperature then, obtains duralumin conjunction
Metal type material finished product.
The invention has benefit that：
1st, technique of the invention makes alloy production technique and cycle time without the need for homogenization and the pre-heat treatment, complies fully with short
The energy-conservation green production of flow process is required.
2nd, aluminium alloy extrusions obtained in the present invention has outstanding toughness and tensile strength, can meet what is day by day increased
High demand.
Specific embodiment
Embodiment 1：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 5.3%, Fe 3.2%, Mn 0.2%, Mg 2.5%, Zn 1.5%, Si
0.5%, Ni 0.1%, Ti 0.2%, it is remaining for Al, it is lower melting 8h under the conditions of 780 DEG C～800 DEG C in temperature, obtains aluminum
Alloy molten solution；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting in the case where temperature is for 725 DEG C, and is cleaned；
(3) it is continuously extruded：
Extruding rotating speed 5r/min, die entrance fillet r=0.4mm, obtain semi-finished product aluminium alloy extrusions；
(4) three-step aging heat treatment：
Three-step aging heat treatment is carried out to the semi-finished product aluminium alloy extrusions that step (3) is obtained, specially：
One-level：Temperature is 300 DEG C, time 2h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 630 DEG C, time 50min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature is 150 DEG C, time 60min, and aluminium alloy extrusions is air cooled to room temperature then, duralumin, hard alumin ium alloy section bar is obtained
Finished product.
Embodiment 2：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 5%, Fe 2%, Mn 0.1%, Mg 1.5%, Zn 1.5%, Si 1%, Ni
0.1%, Ti 0.2%, it is remaining for Al, it is melting 6h under the conditions of 780 DEG C～800 DEG C in temperature, obtains molten aluminium alloy；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting in the case where temperature is for 780 DEG C, and is cleaned；
(3) it is continuously extruded：
Extruding rotating speed 3r/min, die entrance fillet r=0.7mm, obtain semi-finished product aluminium alloy extrusions；
(4) three-step aging heat treatment：
Three-step aging heat treatment is carried out to the semi-finished product aluminium alloy extrusions that step (3) is obtained, specially：
One-level：Temperature is 200 DEG C, time 5h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 600 DEG C, time 60min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature is 120 DEG C, time 80min, and aluminium alloy extrusions is air cooled to room temperature then, duralumin, hard alumin ium alloy section bar is obtained
Finished product.
Embodiment 3：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 5.5%, Fe 4.5%, Mn 0.1%, Mg 0.5%, Zn 0.8%, Si
0.7%, Ni 0.1%, Ti 0.2%, it is remaining for Al, it is melting 7h under the conditions of 780 DEG C～800 DEG C in temperature, obtains aluminum conjunction
Golden liquation；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting in the case where temperature is for 740 DEG C, and is cleaned；
(3) it is continuously extruded：
Extruding rotating speed 4r/min, die entrance fillet r=0.6mm, obtain semi-finished product aluminium alloy extrusions；
(4) three-step aging heat treatment：
Three-step aging heat treatment is carried out to the semi-finished product aluminium alloy extrusions that step (3) is obtained, specially：
One-level：Temperature is 250 DEG C, time 4h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 610 DEG C, time 55min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature is 130 DEG C, time 70min, and aluminium alloy extrusions is air cooled to room temperature then, duralumin, hard alumin ium alloy section bar is obtained
Finished product.
Embodiment 4：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 5.1%, Fe 3.9%, Mn 0.3%, Mg 0.6%, Zn 0.9%, Si
0.5%, Ni 0.1%, Ti 0.2%, it is remaining for Al, it is melting 8h under the conditions of 780 DEG C～800 DEG C in temperature, obtains aluminum conjunction
Golden liquation；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting in the case where temperature is for 755 DEG C, and is cleaned；
(3) it is continuously extruded：
Extruding rotating speed 5r/min, die entrance fillet r=0.5mm, obtain semi-finished product aluminium alloy extrusions；
(4) three-step aging heat treatment：
Three-step aging heat treatment is carried out to the semi-finished product aluminium alloy extrusions that step (3) is obtained, specially：
One-level：Temperature is 280 DEG C, time 3h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 625 DEG C, time 57min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature is 145 DEG C, time 68min, and aluminium alloy extrusions is air cooled to room temperature then, duralumin, hard alumin ium alloy section bar is obtained
Finished product.
Embodiment 5：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 5.2%, Fe 2.8%, Mn 0.2%, Mg 3%, Zn 1.1%, Si
0.9%, Ni 0.1%, Ti 0.2%, it is remaining for Al, it is melting 7h under the conditions of 780 DEG C～800 DEG C in temperature, obtains aluminum conjunction
Golden liquation；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting in the case where temperature is for 775 DEG C, and is cleaned；
(3) it is continuously extruded：
Extruding rotating speed 3r/min, die entrance fillet r=0.4mm, obtain semi-finished product aluminium alloy extrusions；
(4) three-step aging heat treatment：
Three-step aging heat treatment is carried out to the semi-finished product aluminium alloy extrusions that step (3) is obtained, specially：
One-level：Temperature is 295 DEG C, time 2h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 615 DEG C, time 52min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature is 129 DEG C, time 75min, and aluminium alloy extrusions is air cooled to room temperature then, duralumin, hard alumin ium alloy section bar is obtained
Finished product.
In fact, the quality feeds proportioning of the present invention, and continuously extruded parameter, three-step aging heat treatment has significant
Synergy, changes parameter, result is had a great impact.
Comparative example 1：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 5.4%, Fe 3.6%, Mn 0.1%, Mg 1%, Zn 1.5%, Si
0.5%, Ni 0.1%, Ti 0.2%, it is remaining for Al, it is melting 6h under the conditions of 780 DEG C～800 DEG C in temperature, obtains aluminum conjunction
Golden liquation；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting in the case where temperature is for 725 DEG C, and is cleaned；
(3) it is continuously extruded：
Extruding rotating speed 15r/min, die entrance fillet r=0.9mm, obtain aluminium alloy extrusions；
(4) secondary time effect heat treatment：
Three-step aging heat treatment is carried out to the aluminium alloy extrusions that step (3) is obtained, specially：
One-level：Temperature is 270 DEG C, time 3h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 620 DEG C, time 53min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature and obtains finished product aluminum
Alloy profile.
Comparative example 2：
A kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
(1) dispensing and melting：
According to mass percent dispensing：Cu 3%, Fe 5%, Mn 0.2%, Mg 1.6%, Zn 1%, Si 0.1%, Ti
0.2%, it is remaining for Al, it is melting 8h under the conditions of 780 DEG C～800 DEG C in temperature, obtains molten aluminium alloy；
(2) horizontal casting：
The aluminium alloy solution for obtaining is carried out into horizontal casting in the case where temperature is for 780 DEG C, and is cleaned；
(3) it is continuously extruded：
Extruding rotating speed 20r/min, die entrance fillet r=0.8mm, obtain aluminium alloy extrusions；
(4) three-step aging heat treatment：
Three-step aging heat treatment is carried out to the aluminium alloy extrusions that step (3) is obtained, specially：
One-level：Temperature is 100 DEG C, time 4h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 700 DEG C, time 60min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature be 200 DEG C, time 80min, aluminium alloy extrusions is air cooled to into room temperature then, obtain aluminium alloy extrusions into
Product.
Index is tested and assessed：
The duralumin, hard alumin ium alloy section bar obtained using embodiment 1-5 and comparative example 1-2 enters row index test and appraisal, as a result as shown in table 1.
As a result it is as shown in table 1.
Table 1
As can be seen here, technique of the invention is very outstanding, can produce tensile strength in an energy-saving and environment-friendly manner greatly, and percentage elongation is high
High tenacity duralumin, hard alumin ium alloy section bar, the great market potential of the new material.The above, preferably specific embodiment party only of the invention
Formula, but protection scope of the present invention is not limited thereto, any those familiar with the art the invention discloses
In technical scope, technology according to the present invention scheme and its inventive concept equivalent or change in addition all should be covered at this
Within bright protection domain.
Claims (2)
1. a kind of production method of environmentally friendly high tenacity duralumin, hard alumin ium alloy section bar：
（1）Dispensing and melting：
According to mass percent dispensing：Cu 5-5.5%, Fe 2-4.5%, Mn 0.1-0.3%, Mg 0.5-3%, Zn 1.1-
1.5%, Si 0.1-1%, Ni 0.1%, Ti 0.2%, remaining for Al, melting 6h～8h, obtains aluminium alloy at high temperature
Liquation；
（2）Horizontal casting：
The molten aluminium alloy for obtaining is carried out into horizontal casting, and is cleaned；
（3）It is continuously extruded：
Continuously extruding and molding obtains semi-finished product aluminium alloy extrusions；
（4）Three-step aging heat treatment：
To step（3）The semi-finished product aluminium alloy extrusions for obtaining carries out three-step aging heat treatment, obtains high tenacity duralumin, hard alumin ium alloy section bar half
Finished product；
Wherein described step（3）For：Extruding rotating speed 3-5r/min, die entrance fillet r=0.4-0.7mm, obtain duralumin, hard alumin ium alloy type
Material；
Wherein described step（4）For：
One-level：Temperature is 200-300 DEG C, time 2-5h, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Two grades：Temperature is 600-630 DEG C, time 50-60min, then by aluminium alloy extrusions water-cooled or is air cooled to room temperature；
Three-level：Temperature is 120-150 DEG C, time 60-80min, and aluminium alloy extrusions is air cooled to room temperature then, high tenacity duralumin is obtained
Alloy profile finished product.
2. the high tenacity duralumin, hard alumin ium alloy section bar that the production method production described in claim 1 is obtained.
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| CN1675389A (en) * | 2002-08-20 | 2005-09-28 | 克里斯铝轧制品有限公司 | Al-cu alloy with high toughness |
| CN1834276A (en) * | 2006-04-25 | 2006-09-20 | 东北轻合金有限责任公司 | Method of preparing aviation alloyed aluminium variable section sheets |
| CN101484604A (en) * | 2006-07-07 | 2009-07-15 | 阿勒里斯铝业科布伦茨有限公司 | Aa7000-series aluminium alloy products and a method of manufacturing thereof |
| CN102286682A (en) * | 2011-08-24 | 2011-12-21 | 吴江市精工铝字制造厂 | High-strength hard aluminum alloy |
| CN102825092A (en) * | 2012-08-30 | 2012-12-19 | 郴州市强旺新金属材料有限公司 | Production process of hard aluminum alloy profiles |
| CN103243246A (en) * | 2013-05-24 | 2013-08-14 | 怡球金属资源再生（中国）股份有限公司 | High-quality and high-hardness aluminum alloy ingot and production method thereof |
-
2015
- 2015-06-12 CN CN201510321001.0A patent/CN104975213B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675389A (en) * | 2002-08-20 | 2005-09-28 | 克里斯铝轧制品有限公司 | Al-cu alloy with high toughness |
| CN1834276A (en) * | 2006-04-25 | 2006-09-20 | 东北轻合金有限责任公司 | Method of preparing aviation alloyed aluminium variable section sheets |
| CN101484604A (en) * | 2006-07-07 | 2009-07-15 | 阿勒里斯铝业科布伦茨有限公司 | Aa7000-series aluminium alloy products and a method of manufacturing thereof |
| CN102286682A (en) * | 2011-08-24 | 2011-12-21 | 吴江市精工铝字制造厂 | High-strength hard aluminum alloy |
| CN102825092A (en) * | 2012-08-30 | 2012-12-19 | 郴州市强旺新金属材料有限公司 | Production process of hard aluminum alloy profiles |
| CN103243246A (en) * | 2013-05-24 | 2013-08-14 | 怡球金属资源再生（中国）股份有限公司 | High-quality and high-hardness aluminum alloy ingot and production method thereof |
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Address after: 313000 Zhejiang Nanxun District in the town of high-tech industrial park in Dagang Road No. 1088 12B306 Patentee after: Zhejiang rice new material Limited by Share Ltd Address before: 313000 Zhejiang city of Huzhou Province town Wuxing District Road No. 288 East Lake fabric Patentee before: ZHEJIANG MIHUANG ALUMINUM INDUSTRY CO., LTD. |
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Denomination of invention: Environment-friendly high-toughness hard aluminum alloy profile production process Effective date of registration: 20171214 Granted publication date: 20170412 Pledgee: The Agricultural Bank of Huzhou branch, Limited by Share Ltd Chinese Pledgor: Zhejiang rice new material Limited by Share Ltd Registration number: 2017980000551 |